It is currently 23 Sep 2017, 06:09

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Q29 of M13

Author Message
Intern
Joined: 15 Nov 2009
Posts: 12

Kudos [?]: [0], given: 9

### Show Tags

08 Feb 2010, 09:18
Can anyone explain the solution of this problem.

What was Silvia's income in December?

1. Silvia's income in December was \$50 more than her average monthly income during the year.
2. Silvia's income in December was twice her average monthly income during the year.

(C) 2008 GMAT Club - m13#29

* Statement (1) ALONE is sufficient, but Statement (2) ALONE is not sufficient
* Statement (2) ALONE is sufficient, but Statement (1) ALONE is not sufficient
* BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
* EACH statement ALONE is sufficient
* Statements (1) and (2) TOGETHER are NOT sufficient

Kudos [?]: [0], given: 9

Senior Manager
Joined: 28 Jun 2009
Posts: 442

Kudos [?]: 189 [1], given: 46

Location: United States (MA)

### Show Tags

08 Feb 2010, 16:29
1
KUDOS
Lets say Average income during the year is A
and income in December is D

If statement 1 is taken => D = A + 50 (1 alone not sufficient)

If statement 2 is taken => D = 2*A (2 alone is not sufficient)

If considered both, solving the equations,
we get A = 50 therefore D = 100

* BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient

Kudos [?]: 189 [1], given: 46

Re: Q29 of M13   [#permalink] 08 Feb 2010, 16:29
Similar topics Replies Last post
Similar
Topics:
14 M13 Q5 30 20 Apr 2014, 08:04
M13 System Issue 1 22 Aug 2008, 07:36
m19 Q29 2 02 May 2011, 06:03
1 m15 q29 1 05 Dec 2010, 20:37
m06, Q 29 2 22 Sep 2009, 17:34
Display posts from previous: Sort by

# Q29 of M13

Moderator: Bunuel

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.